#include<stdio.h>

int Sum(int s,int e)
{
  int sum=0;
  int i=s;
  for(i;i<=e;i++)
  {
    sum+=i;
  }
  return sum;
}

int main()
{
  printf("process is running\n");

  int start =1;
  int end=100;
  int result=Sum(start,end);
  printf("process is done,result:%d\n",result);
  return 0;
}
